1 Explain that a population pyramid shows the age and sex structure of a population. 2  Point to the horizontal bars, which show the percentage (or the absolute number) of males and females in each age group. 3  Have students interpret the chart.
1 Although they range from $150-$400 or more, a large capacity (25-70 pints) dehumidifier for a basement (the dampest portion of most homes) or other large area averages $200-$300.
If condensation seems to be the issue, then the excess water can often be the result of poor ventilation. If heating or air conditioning is unavailable in the basement, then the installation of a dehumidifying unit can be a simple fix that costs about $250.If the water pipes require insulation, then it will run between $50-$100. One of the most expensive problems to fix is crack in the foundation.This repair will require the help of a professional and can cost anywhere from $500 to $15,000.f condensation seems to be the issue, then the excess water can often be the result of poor ventilation. If heating or air conditioning is unavailable in the basement, then the installation of a dehumidifying unit can be a simple fix that costs about $250.